Home / 8,129.19-11,216.01-5,146.29

Finding the Fourth Proportional to 8,129.19, 11,216.01 and 5,146.29

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Solution

The fourth proportional to 8,129.19, 11,216.01 and 5,146.29 is: 7,100.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,129.19 : 11,216.01 = 5,146.29 : x
  2. Step 2: Convert to fraction form
    8,129.19/11,216.01 = 5,146.29/x
  3. Step 3: Cross multiply
    8,129.19x = 11,216.01 × 5,146.29
  4. Step 4: Simplify right side
    8,129.19x = 57,720,840.10
  5. Step 5: Solve for x
    x = 57,720,840.10/8,129.19
  6. Step 6: Final answer
    x = 7,100.44

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Half scale
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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.